5s in slash?

[hemiblas]

Which speed control would you use?
I would guess you are better just sicking to 3S and buy an 8000mah pack or something similar for longer runtime. My 3s 5000mah pack gets me 50mph and doesnt overheat and anything more than that in a slash is just not usable power.
A medusa over a feigao will get you longer run times just because its more efficient and will use less amps for the same power. So just by swapping out motors you could get longer run time.
5S might be a bit overkill for that truck, but its dooable.